Improvement in oil-presses



UNITE-D STATES PATENT OFFICE.

W. V. MCKENZIE, 0F JERSEY CITY, NEW' JERSEY.

IMPROVEMENT IN OILPRESSES.

Sprfeiiieation forming part ol' letters Patent No. 35,168, dated May 6, 1136?.

.r1 /17/ 7071/0111/ it 'lum/(1171.007711:

e it known that l, W] Y. MCKENZIE, of Jersey City, in the eounty ol' ludson and Stat e of New Jersey, have invented a new and usefnl linprovenient in Oil-Presses; and l do hereby deelare that 111e 'following is a full,

elear, and exaet deseription of the sanie, rel'- i erenoe being had to the aeeon11l1an ving drawings, 'torn1i1'1ga part ol" this speeitieation, in

whieh- Figure l represents a longitudinal vertieal seetion of iny inven1ion. Fig. 2 is a lront elevation oli- 111e sa111e.

Similar letters ol' reli'erenee in hoth views indieate corresponding par1s.

This invention is intended as an i111p1'ove* nient on that ('lass ol oil-1,1resses Vtfor wheh Letters Patent have heen grantt-al to .1). L. Latonrette October 2S, '1551. lIle deserihes a, series of parallel slidingl plates eaeh of whieh (with the exe-ption' o1? the first and the last) serves as a press-110x on one side and as a follower on the other, and the several press- 11o.\'es thus fornied are in'ovided with suitable doors on top and 11ot1o111. Before the operation oli' pressing1 eonnnenees the doors at the 11otton1, whieh are attaehed to the press-boxes hy suitahle hinges, are raised hyehains windingo11asui1a11le shalt. As the pressing eon1- 111enees, the eharges in the several press-boxes have a tendency to Yloree 111e doors open, and il one ol? the ehains holding said doors is not pert'eetlv tight, or il.' it stretches stnnowhat hel'ore the door enters the reeesses or slot in the eorresprmding follower, said follower eatehes on 111e edge oli' the door and forces it olii' the hinges. Sueh aeeidents eanse n1ueh delay inV the ope1'a1ion and Ainueh expense `for repairs. Besides th is disadvan1age, the doors on the top ol` 111e several prt-'ss-hoxes have 1o 11e fastened down separately--a11 operation eausing 111ueh la11o1' and delay. 'lhese disadvantages are eoniphftely ol1via1ed hy my invention, whieh Consists in the eniploynient ot' a slide passing over the top ot' the several press-lames and through slots formed in the upperportions ol? the slidingI plates in such a inanner that 11y inserting said slide the several p1'ess-hi'1xes are ptwl'eetly closed on the top andan additional guide Yl'or the sliding` plates is obtained.

It consists, 'lj'nr1iln1r, in the tnnploynient ol a sliding key 1i1assingtl1rongh slots in the lower l parts ot' the sliding plates, in combination with l the hinged doors at the l1otto1n ot' the several lpress-hoxes in sueh a inanner that h v the l aetion olf the key the doors are prevented 11eingt'oreed open when 111e operation of' pressing i eonnnenees, and they are not liahle to heeoine injured hy catching against the Iolltnvers.

1 'l`o enable those skilled in the art to make l and use n1y invention, l will proeeed to deserihe its eonstrnetion and opi-111111111 with relferenee to the drawings.

A series ot plates, A l l), are arranged on guide-rods E, whieh are rigidly fastened to the two end plates, 'E l1". ',lhe plate A is stationary and it is lirinly eonneeted to the end plate l1`,a11d t'ro111 its surface rise two flanges, u, whieh tfornl the sides ot' the press- 110x A and the guides 'for the follower IF, which is attached to that side ot' the plate l faeing the plate A. The plate 1'3 slides on the guide-rods E, and from its side opposite the follower B* rise two flanges, l1, which forni the sides of. the press-110x B, similar in every respmt to the press-110x A. The plate C is arranged preeisel y like the plate B in every respeet, being provided on one side with the follower C* and on the other sidel with the press-box t". ,lhe last plate, 1), in the series is siinilar to the plates l C, being' provided with a Yl' '1llower, 15"', 13o iit into the press-box (1",111111 its outer side, instead of' being provided with ,tla11ges, has a stein, 11,1'ising from its eenter, whieh slides in the end plate F', and through which inotion is imparted to 4the sliding' piates l) C B. Slotted links e eonneet 111e eorners of the sliding plates and serve to keep said plates in 111e proper relation to each olher. A slide, G, whieh passes through a slot, f, in the upper part of the end plate F and through eorresponding slots in the plates C on the top, and it torins an additional guide lor the sliding plates B U 1'). By withdrawing this slide thepress-hoxes are opened simultaneously Yfor the purpose ot' Changing them, and hy inserting the slide all the boxes are Closed elteetnally and with little trouble or loss ol time.

The bottoms oli the press-boxes A 3 C are formed by doors o. b e', whieh are hinged to the lower edges of plates A B C, and which l eonneet hy means of chains g with the 1'0- l tary shaftI 71, so that by rotating said shaft A l l), closes the several press-boxes A B the doors are closed or opened sii'nultaneonsly. The sliding plates B C D are provided with slots b* c* d* to receive the doors d b c' when the plates are forced up toward the end plate F; but in order to permit said doors to enter the corresponding slots it is necessary that they should be perfectly closed. It one of the doors is permitted to hang down a little before it has passed into the corresponding slot, it is liable to catch against the edge ot' said slot and to get broken or otherwise injured, and it' the doors are held up by the chains g only they are liable to be forced open and to become broken by catching against the edges of the corresponding slots. ln order to ettectually prevent this difficulty, l use a key, ll, which passes through a slot, 71, 5 in the end plate 'F and through recesses i in the plates A l C D close under the doors when the same are closed, as clearly shown in Fig. l of the drawings. rlhis key does not interfere with the sliding motion of the plates B C D, and it keeps the doors up and causes them to catch ithout fail in the corresponding slots b* o* (1*. The chains g are only required to close the doors so that the key can be inserted, and after the key is inserted they are not subjected to any turther strain.

Vhen the doors are closed by the use of the chains only, they are liable to become broken or forced off their hinges almost With every operation of pressing, and so much time is lost in repairing and readjusting things that a press of this construction has heretofore become a source of continual annoyance.

By the use of my improvement the operation is rendered perfectly safe, and the danger of breaking the doors or any other part ot' the press is completely avoided.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. TheA employment of the slide G, in combination with the press-boxes A B C', constructed and operating substantially as and for the purpose herein shown and described.

2. The arrangement of the key H, incombination with the hinged doors d Zi c at the bottom ot the press-boxes A B C', constructed and operating as and forthe purpose speciied.

XV. V. MCKENZIE.

Vitnesses:

JAMES LAIRD, G. W. REED. 

